Machine for truing scouring wheels



F. M. FURBER.

MACHINE FOR TRUING SCOURING WHEELS.

APPLICATION FILED JAN- 7, I920.

Patented Nov. 21, 1922.

Patented New 1922..

entree STATES @FFTQE.

FREDERICK M. FURBER, 0F REVERE, MASSACHUSETTS, ASSIGNOE TO UNITED SHOE NEACHINERY CORPORATION, OF PATERSOIJ NEW? JERSEY, A CORPORATION OF NEW J EPISEY.

MACHINE FOR TRUING- SCOURING NK-IEELS.

Application filed January 7, 1520.

To all whom it may concern:

Be it known that I, Fnnonnron M. FURBnR, a citizen of the United States, residing 1n Revere, in the county of Suffolk and State of lvlassachusetts, have invented certain Improvements in Machines for Truing Scouring 2' heels, of which the following description, in connection with the accompanying drawings, is a specification like reference characters on the drawings indicating like parts in the several figures.

This invention relates to abrading machines and refers particularly to machines of this class that are used as truing or finishing machines to impart predetermined contours to the peripheries of cylindrical devices such as the rolls or wheels employed for scouring heels. A machine of this character is disclosed in Letters Patent No. 1,192,883, granted August 1, 1916 upon an application filed by me. In that machine the periphery of the roll is given a shape complementary to that of the periphery of the grinder.

The principal object of the present invention is to provide a machine of the general type shown in said patent but capable of 'ariably defining the lateral contour of the periphery of the roll being operated. To this end the illustrated machine is provided with a templet which may be varied according to the shape that is desired for the roll, whereby the machine is capable of being quickly adapted to perform a wide variety of work.

An important feature of the invention consists in a support on which the roll which is to be trued is rotatably mounted and means whereby said support may be shifted in the direction of the axis of the roll and also toward and from the truing grinder under the control of a stationary pattern or templet to effect a peripheral shaping of the roll according to said templet. I

In the illustrated embodiment of the invention, a longitudinally adjustable rod is mounted to rock while being shifted longitudinally and has two arms on one of which the roll to be trued is rotatably supported while in peripheral contact with the grinding wheel and the other of which cooperates with a templet to cause the roll to move toward and from the grinder as said roll is shifted longitudinally and while the roll is being rotated on its own axis.

Eterial No. 349,901.

Another feature of the invention comprises an organization of the parts related as described whereby gravity alone insures proper action of the templet, thus dispensing with springs or manually exerted pressure.

These and other features of the invention including certain details of construction and combinations of parts will now be described in connection with the accompanying drawings in which an illustrative machine is shown. in said drawings,

Fig. 1 is a front elevation of the machine, partly broken out, and

Fig. 2 is an elevation looking from the left of Fig. 1.

The base of a suitable frame or standard is indicated at 12, the upper portion of the frame being provided with bearings 13 for a shaft 14 to which is connected a belt pulley 15. At one end the shaft 14. terminates within the outer end of a bearing 13 for a purpose hereinafter described, the other end of the shaft extending to a requisite distance from the frame and provided with an abrading wheel or grinder 16, the periphery of which is preferably rounded.

Mounted in a bearing 17 of the frame is a rod 18, said rod and bearing being relatively formed to permit the rod to both rock and slide endwise in said bearing. Secured to one end of the rod 18 is an arm 19, and the outer end of said arm 19 carries a pin or spindle 20 on which is rotatably mounted a bushing 21, the bushing being held on the pin or spindle by a screw 22.

The bushing 21 supports and carries the roll 23 which represents the work which is to be peripherally trucd by the grinder 16, said roll being fixedly but removably mounted on the bushing 21 by means of a clamp nut 24 engaging an externally threaded p0:- tion of the bushing 21 and having a crank handle 25. The inner end of the bushing 21 adjacent the arm 19 is formed or provided with ratchet teeth 26 with which a pawl 27 (Fig. 2) engages for a purpose presently described. The piece of work, viz, the roll is clamped between the side of the enlarged portion of the bushing which carries the ratchet teeth 26 and the nut 24 so that,

by means of the handle 25. the roll 23 may be rotated, the direction of rotation being limited :to that indicated by the arrow B in Fig. 2 by reason of the engagement of the pawl 27 with the ratchet teeth 26. The grinding wheel 16 is driven in the direction of the arrow at in Fig. 2.

The rod 18 at an intermediate point is provided with rack teeth 28 which are preferably annular, extending entirely around the rod 18. Engaging the rack teeth 28 is a pinion 29 carried by a shaft 30 mounted in a bearing provided in the frame of the ma-- chine and having a hand wheel '31 so that,

by manipulating the hand wheel 31. the rod 18 may be moved to the right or left 1), causing the roll 28 to move past the grinder 16. I

As hereinbefore mentioned, the shaft 14 does not extend entirely through one of the bearings 13. This leaves a space or socket in the outer end of said bearing 13 to receive the inner end of a templet 32 which is se cured in position by means of a set screw 33. This structure enables the templet to be qillckly replaced by another of different s ape.

Fixedly secured to the rod 18 are two collars 34, 35 spaced from each other to confine between them the hub 36 of an arm 37 having a roll. 38 to co-op'erate with the templet 32. The hub 36 is loosely mounted on the rod 18 between the collars 34 35 and has a downwardly curved lug 39, said lug 39 being laterally offset from the arm 37, as shown in Fig. 1, to be in position opposite a lug 40 of the collar 34, a screw 41 extending through the lug 40 and the inner end of said screw bearing against the face of the lug 39. Practically the member 34 may be termed a hub for the lug 40. Since said hub or collar 34 is rigidly secured to the rod 18, it must, when actuated, transmit rocking move ments to the rod 18.

As best shown in Fig. 2, the arm 37 extends rearwardly and upwardly so that the roll 38 rides along the under surface of the templet 32, while the arm 19 which carries the work supporting bushing or spindle inclines forwardly and upwardly. Therefore the weight of the arm 19 and the parts, including the roll 23, carried thereby, exerts a constant tendency to hold the arm 37 with its roll 38 in contact with the templet 32. In other words the templet acts through the arm 37, rod 18, and arm 19, to hold the work to thegrinder in opposition to the tendency of the work to gravitate away from the grinder. Practically the rod 18 constitutes a rocking carriage for thearms 37 and 19 and the work 23, all of these parts sliding in unison to shift the work and the roll 38 across the grinder and templet respectively,

and the weight of the arm 19 and the work.

acts to hold the roll 38 against the templet so that as the carriage is shifted the templet positively causes the work to be presented to the grinder with a definite pressure regard less of what the weight of the work may be.

This structure ensures a positive and uniform pressure of contact of the work against the grinder which can not be obtained when the pressure is efiected manually, or when a spring is relied upon to maintain the parts in their operative relative positions. As has been stated, the hub 36 which carries the arm 37 is loosely mounted on the rod 18. Since, however, the lug 39 of the hub 36 has its face contacting with the screw 41 which is rigid relatively to the rod 18, the roll 23 must always stand or be supported at such distance from the axis of the grinder 16 as is determined by the adjustment of the screw 41. By referring to Fig. 2, it will be understood that upon rotating the screw 41 in a direction to withdraw it through the lug 40, the arm 19 and the work carried. thereby would swing down and away from the grinder 16. On the other hand, by turning the screw 41 in, the arm 19 will be swung upwardly because the weight of the said arm and the work carried thereby is transmitted through the lug 40 and screw 41 to the lug 39 and arm 37 of the hub 36, the pressure being sustained by the'templet 32. Therefore provision is made not only for operating upon rolls 23 of varying lateral contours, and controlling the shaping thereof by a suitable templet, but also the rolls to be operated upon maybe of widely varying sizes. a

In operation, after the selected templet 32 has been secured in position and the scouring roll 23 has been secured in position upon the bushing 21, the operator adjusts the screw 41 to insure contact of the roll 23 with the grinder 16 when said roll 23 is brought to proper lateral position relatively to the grinder, and then with one hand operates the hand wheel 31 to slide the rod 18 along to bring the roll 23 into contact with the grinder and carry it past the grinder, employing the other hand at the same time to rotate the roll 23 by means of the crank handle 25 so that the roll 23 will be properly sha 'ied entirely around its periphery.

The dust which results from operation of the machine is taken care of by the usual means, including a hood, such means being omitted from the drawings to avoid interference with illustration of the improvements described.

While the invention is illustrated herein as embodied in a machine for truing rolls, it is to be understood thatl do not limit myself thereto as other articles may be carried by the arm 19 and ground under the control of the templet which operates in opposition to the force of gravity tending to swing the work away from the grinder. 7

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is: v

1. A machine of the character described having, in combination, a grinding wheel, means rotatively supporting a roll in peripheral contact with said wheel, a stationary templet, and means for traversing said roll supporting means in a path extending across the grinding wheel and for rocking it toward and from the grinding wheel in accordance with the shape of the sta tionary templet.

2. A machine for truing the peripheries oi wheels, comprising an abrading wheel, a longitudinally adjustable roe; rod parallel with the axis oi? the grinding wheel, said rod having an arm provided with means for rotatively supporting the wheel to be truer? and having a second arm, and means to coact with said second arm to control the rocking movements of the rock rod as it shifts longitudinally.

3. A machine ot the character described. having, in combination, agrinding wheel, a movable support for rotatively holding a roll in peripheral. contact with said wheel, means for shit -ng the support longitudinally oi the axis 01": the roll carried thereby, a fixed templet and teinplet cooperating member for controlling the distance of the support from the grinding wheel as a consequence of said longitudinal shifting movement.

4. A machine of the character described having, in combination, a grinder, a work support having means for rotatively holding the work and being constructed and arranged to gravitate away from the grinder, a templet, a templet co-operating member, and connections between said member and the work support to cause the templet to hold the work to the grinde 5. A machine of the character described having, in combination, a grinder, a templet, and. a work support having a controller to co-operate with the templet, said work support having work rotating means and being constructed and arranged. to cause the work to gravitate away from the grinder and cause the templet to eiiect movements of said controller to positively move the work toward the grinder.

6. A machine of the character described having, in combination, a grinding wheel, a templet, and a carriage movable in a direc tion traversing the plane of rotation of the wheel, said carriage being mounted to rock and having; two a1 s one of which is pro vided with means for rotatively supporting the work and the other being constructed and arranged to co-act with the templet in controlling rocking movements of the carriage.

7. A machine of the character described having, in combination, a grinding wheel, a templet, a carriage movable in a direction traversing the plane of rotation of the wheel, said carriage being mounted to rock and having two arms one of. which provided with means for rotatively supporting the work and the other being constructed and ar d to co-act with the t mplet in control in rock ngmovements of the carrir'ige, and mean or adjusting one of said arms relatively to the carriage.

S. A machi; e of the character described. having, in combii ion, a grinding wheel, teniplet, and a carriage movable in a direction traversing the plane of rotation of the wheel, said carrn e being mounted to rock and having two arms one of which is pro" vided with means tor rotatively suppor ing the work and the other being constructed and arranged to co-act with the templet in controlling rocking i'novements of the carriage, the last me tioned being adjustably connectec .th the carriage.

9. A machine or the character described having, in combination, a shaft having a grinding wheel, a down Hardly facing templet, a longitudinally movable and rocking carriage mounted below the plane of said shatt, said carriage having an arm. extending rearwardly under the templet to coopcrate therewith in controlling rocking movements of the carriage, and work support connected with said carriage in position to gravitate away from the Wheel when permitted to do so by the templet.

10. A. machine of the character described having, in combination, a shaft having a grinding wheel, a downwardly facing templet, a longitudinally movable and rocking carriage mounted below the plane of said shaft, said carriage having an arm extending rearwardly under the templet to cooperate therewith in controlling rocking movements or"- the carriage, and a work-supporting arm extending forwardly and upwardly from the carriage to cause the weight of the work to aid in preserving cooperation between the templet and the controlling arm.

11. A machine of the character described having, in combination, a shaft having a grinding wheel, a removably mounted downwardly facin templet in alinement with the shaft, a longitudinally movable and rockinv carriage mounted below the plane of sai shaft, said carriage having an arm extend.- ing rearwardl y under the templet to co-operate therewith in controlling rocking movements of the carriage, and a work suppor connected with said carriage in position to gravitate away from the wheel when permitted to do so by the templet.

12. A machine of the character described having, in combination, a shaft having a grinding wheel, a downwardly "facing templot, a carriage comprising a rod mounted to slide and rock in bea ings below the plane of said shaft, an arm extending rearwardly from the rod under the templet, and another arm extending forwardly and upwardly from the rod and having means for rotatively supporting the work to be operated upon.

A machine of the class described having, in combination, a shaft having 'a grinding wheel, a downwardly facing templet, a

' carriage comprising a rod mounted to slide and rock in bearings below the plane of said shaft, an arm extending rearwardly from the rod under the templet, another arm extending forwardly and upwardly from the rod and having means for rotatively supporting the work to operated upon, and means for manually shifting said rod longitudinally.

14. A machine of the class described having, in combination, a shaft having a grinding wheel, a downwardly facing temglet, a carriage comprising a rod mounted to slide and rock in bearings below the plane of said shaft, an arm extending rearwardly from the rod under the templet, another arm extending forwardly and upwardly from the 1 sses? rod and having means for rotatively supporting the work to be operated upon, and means for manually shifting said rod longitudinally, said means comprising rack teeth carried by the rod and a co-operating pinion having a handle.

1.5. A machine of the character described having, in combination, a shaft having a grinding wheel, downwardly facing templet, a carriage comprising a rod mounted to slide and rock in bearings below the plane of said shaft, an arm extending forwardly and upwardly from the rod and having means for rotatively supporting thework to be operated upon, a hub loosely mounted on the rod and having a controlling arm extending rearwardly under the templet and having a lug, and a lug extending from the rod and having a screw bearing against the lug of said controlling arm hub.

In testimonyvwhereof I have signed my nameto this specification.

FREDERICK M. FURBEB. 

